Though she has kept silent about whether she plans to run for president in 2016, Hillary Rodham Clinton's potential candidacy has continued to pick up steam. Ready for Hillary, a super PAC pushing Clinton to run, has reportedly already received -- and declined -- offers for donations worth millions of dollars.

As an independent expenditure committee, Ready for Hillary is legally allowed to accept unlimited donations from individuals and corporations. But the organization has chosen to instead focus on the same kind of grassroots efforts that gave the competitive edge to then-Illinois Sen. Barack Obama, who defeated Clinton in the 2008 primary.

In fact, the group announced earlier this month that it had enlisted the help of Obama campaign veterans to facilitate grassroots mobilization in the event that Clinton decides to run. Meanwhile, a steady stream of endorsements from lawmakers and prominent political figures has signaled the mounting hope among Democrats that Clinton will take the presidential plunge.